CVE-2021-1311 Explained : Impact and Mitigation
Learn about CVE-2021-1311, a vulnerability in Cisco Webex Meetings allowing remote attackers to take over host roles during meetings. Find out impact, prevention, and mitigation strategies.
A vulnerability in the reclaim host role feature of Cisco Webex Meetings and Cisco Webex Meetings Server allows an authenticated, remote attacker to take over the host role during a meeting by brute-forcing the host key. Here's everything you need to know about CVE-2021-1311.
Understanding CVE-2021-1311
This section will delve into the details of the CVE-2021-1311 vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server.
What is CVE-2021-1311?
CVE-2021-1311 is a vulnerability that permits an authenticated attacker to seize the host role during a Webex meeting by exploiting the lack of protection against brute-forcing the host key.
The Impact of CVE-2021-1311
If successfully exploited, the vulnerability could allow the attacker to acquire or take over the host role for a meeting, potentially leading to unauthorized control over the meeting.
Technical Details of CVE-2021-1311
Let's explore the technical aspects of the CVE-2021-1311 vulnerability.
Vulnerability Description
The vulnerability arises from the absence of safeguards against brute-forcing the host key in Cisco Webex Meetings and Cisco Webex Meetings Server, enabling attackers to manipulate the host role.
Affected Systems and Versions
The affected product is Cisco WebEx Meetings Server with all versions being impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Webex Meetings Server site, requiring access to join a Webex meeting.
Mitigation and Prevention
Discover the essential steps to mitigate and prevent exploitation of CVE-2021-1311.
Immediate Steps to Take
Immediately update the affected systems and restrict access to WebEx meetings to trusted entities only.
Long-Term Security Practices
Establish comprehensive security measures such as regular security training and stricter access controls to prevent similar vulnerabilities.
Patching and Updates
Keep the Cisco Webex Meetings and Cisco Webex Meetings Server updated with the latest patches released by the vendor to address this vulnerability.